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Goodwill and Purchased Intangible Assets - Schedule of Goodwill (Details) | 6 Months Ended
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Dec. 31, 2019 USD ($) reporting_unit segment
Goodwill |  |
Number of reportable segments | segment | 4 |
Number of reporting units | reporting_unit | 6 |
Goodwill |  |
Balance as of June 30, 2019 | $ 2,211,858,000 | [1]
Acquired goodwill | 54,001,000 | [1]
Goodwill adjustments | 33,968,000 | [1]
Foreign currency adjustments | (46,000) | [1]
Balance as of December 31, 2019 | 2,299,781,000 | [1]
Wafer Inspection and Patterning |  |
Goodwill |  |
Balance as of June 30, 2019 | 360,615,000 | [1]
Acquired goodwill | 54,001,000 | [1]
Goodwill adjustments | 0 | [1]
Foreign currency adjustments | (46,000) | [1]
Balance as of December 31, 2019 | 414,570,000 | [1]
Global Service and Support (“GSS”) |  |
Goodwill |  |
Balance as of June 30, 2019 | 25,908,000 | [1]
Acquired goodwill | 0 | [1]
Goodwill adjustments | 0 | [1]
Foreign currency adjustments | 0 | [1]
Balance as of December 31, 2019 | 25,908,000 | [1]
Specialty Semiconductor Process |  |
Goodwill |  |
Balance as of June 30, 2019 | 821,842,000 | [1]
Acquired goodwill | 0 | [1]
Goodwill adjustments | 0 | [1]
Foreign currency adjustments | 0 | [1]
Balance as of December 31, 2019 | 821,842,000 | [1]
PCB and Display |  |
Goodwill |  |
Balance as of June 30, 2019 | 989,918,000 | [1]
Acquired goodwill | 0 | [1]
Goodwill adjustments | 33,968,000 | [1]
Foreign currency adjustments | 0 | [1]
Balance as of December 31, 2019 | 1,023,886,000 | [1]
Component Inspection |  |
Goodwill |  |
Balance as of June 30, 2019 | 13,575,000 | [1]
Acquired goodwill | 0 | [1]
Goodwill adjustments | 0 | [1]
Foreign currency adjustments | 0 | [1]
Balance as of December 31, 2019 | 13,575,000 | [1]
Others |  |
Goodwill |  |
Balance as of December 31, 2019 | $ 0 |
[1] | No goodwill was assigned to the Other reporting unit, and accordingly was excluded in the table above.

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